1/*
2 * Copyright (c) 2009, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25package com.sun.beans.finder;
26
27import com.sun.beans.WeakCache;
28
29import java.beans.PropertyEditor;
30
31import com.sun.beans.editors.BooleanEditor;
32import com.sun.beans.editors.ByteEditor;
33import com.sun.beans.editors.DoubleEditor;
34import com.sun.beans.editors.EnumEditor;
35import com.sun.beans.editors.FloatEditor;
36import com.sun.beans.editors.IntegerEditor;
37import com.sun.beans.editors.LongEditor;
38import com.sun.beans.editors.ShortEditor;
39
40/**
41 * This is utility class that provides functionality
42 * to find a {@link PropertyEditor} for a JavaBean specified by its type.
43 *
44 * @since 1.7
45 *
46 * @author Sergey A. Malenkov
47 */
48public final class PropertyEditorFinder
49        extends InstanceFinder<PropertyEditor> {
50
51    private static final String DEFAULT = "sun.beans.editors";
52    private static final String DEFAULT_NEW = "com.sun.beans.editors";
53
54    private final WeakCache<Class<?>, Class<?>> registry;
55
56    public PropertyEditorFinder() {
57        super(PropertyEditor.class, false, "Editor", DEFAULT);
58
59        this.registry = new WeakCache<Class<?>, Class<?>>();
60        this.registry.put(Byte.TYPE, ByteEditor.class);
61        this.registry.put(Short.TYPE, ShortEditor.class);
62        this.registry.put(Integer.TYPE, IntegerEditor.class);
63        this.registry.put(Long.TYPE, LongEditor.class);
64        this.registry.put(Boolean.TYPE, BooleanEditor.class);
65        this.registry.put(Float.TYPE, FloatEditor.class);
66        this.registry.put(Double.TYPE, DoubleEditor.class);
67    }
68
69    public void register(Class<?> type, Class<?> editor) {
70        synchronized (this.registry) {
71            this.registry.put(type, editor);
72        }
73    }
74
75    @Override
76    public PropertyEditor find(Class<?> type) {
77        Class<?> predefined;
78        synchronized (this.registry) {
79            predefined = this.registry.get(type);
80        }
81        PropertyEditor editor = instantiate(predefined, null);
82        if (editor == null) {
83            editor = super.find(type);
84            if ((editor == null) && (null != type.getEnumConstants())) {
85                editor = new EnumEditor(type);
86            }
87        }
88        return editor;
89    }
90
91    @Override
92    protected PropertyEditor instantiate(Class<?> type, String prefix, String name) {
93        return super.instantiate(type, DEFAULT.equals(prefix) ? DEFAULT_NEW : prefix, name);
94    }
95}
96